The Taoiseach Brian Cowen is to visit the EU's most powerful member states over the coming days to discuss Ireland's plans for addressing the future of the Lisbon Treaty.
Mr Cowen will visit Berlin, London and Paris on Thursday and Friday ahead of next week's EU summit in Brussels.
The Irish Government has promised to put forward a plan at the summit for dealing with Ireland's rejection of the Lisbon Treaty.
Most observers believe a second referendum will be held late next year in an effort to overturn last June's result.